Answer:
it loses engry  it follows difernt paths
Explanation:
 
        
             
        
        
        
Answer:
To know the time ,length area 
 
        
             
        
        
        
Answer:
An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.
 
        
             
        
        
        
Answer:
a = 2 m/s²
Explanation:
average acceleration = change of velocity / change of time
a = Δv/Δt = (20 - 10) / 5 = 10/5 = 2